Properties of the Number 87856

Eighty-Seven Thousand Eight Hundred Fifty-Six

Basics

Value: 87855 → 87856 → 87857

Parity: even

Prime: No

Previous Prime: 87853

Next Prime: 87869

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 17 ² × 19

Divisors: 1, 2, 4, 8, 16, 17, 19, 34, 38, 68

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101011100110000

Octal: 253460

Duodecimal: 42A14

Hexadecimal: 15730

Square: 7718676736

Square Root: 296.4051281607658

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = M(10ⁿ), where M(n) is Mertens's function. A84237

Numbers k such that iphi(k) = iphi(k+1), where iphi(k) is an infinitary analog to the Euler totient function (A091732). A326403

a(n) = n + (n+1)² + (n+2)³ + (n+3)⁴. A27621

a(n) = Fibonacci(n) * Fibonacci(2·n). A37451

Numbers n such that n⁴ is a sum of 4th powers of four nonzero integers whose sum is n. A138760

Primes of the form 16·m² + 25, m=1,3,5,... A87856